Finding the Third Proportional to 156,978 and 234,851

Step by Step Solution

1. Step 1: Write the proportion equation
   156,978 : 234,851 = 234,851 : x
2. Step 2: Convert to fraction form
   156,978/234,851 = 234,851/x
3. Step 3: Cross multiply
   156,978x = 234,851 × 234,851
4. Step 4: Simplify right side
   156,978x = 55,154,992,201
5. Step 5: Solve for x
   x = 55,154,992,201/156,978
6. Step 6: Final answer
   x = 351,354.92